USB flash drive



FIG. 1 is a top perspective view of a USB flash drive, with memory card inserted;

FIG. 2 is a is a top perspective view thereof, with memory card and cap removed;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top view thereof with cap removed;

FIG. 8 is a first end view thereof; and,

FIG. 9 is a second end view thereof.

The broken line showing of portions of the USB flash drive is included for the purpose of illustrating unclaimed portions and forms no part of the claimed design. 

The ornamental design for a USB flash drive, as shown and described. 